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Finding the Fourth Proportional to 261,862.74, 392,819.49 and 104,055.84

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Solution

The fourth proportional to 261,862.74, 392,819.49 and 104,055.84 is: 156,093.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,862.74 : 392,819.49 = 104,055.84 : x
  2. Step 2: Convert to fraction form
    261,862.74/392,819.49 = 104,055.84/x
  3. Step 3: Cross multiply
    261,862.74x = 392,819.49 × 104,055.84
  4. Step 4: Simplify right side
    261,862.74x = 40,875,162,000.32
  5. Step 5: Solve for x
    x = 40,875,162,000.32/261,862.74
  6. Step 6: Final answer
    x = 156,093.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.